vsock: use new wait API for vsock_stream_sendmsg()

[karo-tx-linux.git] / lib / string.c

diff --git a/lib/string.c b/lib/string.c
index b5c9a1168d3aef02526b4ac923e1c8bb41c215df..1c1fc9187b054ccae0d55f6678a23971de109718 100644 (file)
--- a/lib/string.c
+++ b/lib/string.c
@@ -656,6 +656,32 @@ int match_string(const char * const *array, size_t n, const char *string)
 }
 EXPORT_SYMBOL(match_string);
 
+/**
+ * __sysfs_match_string - matches given string in an array
+ * @array: array of strings
+ * @n: number of strings in the array or -1 for NULL terminated arrays
+ * @str: string to match with
+ *
+ * Returns index of @str in the @array or -EINVAL, just like match_string().
+ * Uses sysfs_streq instead of strcmp for matching.
+ */
+int __sysfs_match_string(const char * const *array, size_t n, const char *str)
+{
+       const char *item;
+       int index;
+
+       for (index = 0; index < n; index++) {
+               item = array[index];
+               if (!item)
+                       break;
+               if (sysfs_streq(item, str))
+                       return index;
+       }
+
+       return -EINVAL;
+}
+EXPORT_SYMBOL(__sysfs_match_string);
+
 #ifndef __HAVE_ARCH_MEMSET
 /**
  * memset - Fill a region of memory with the given value